unstable


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unstable

(ŭn-stā′bəl)
adj. unsta·bler, unsta·blest
1. Chemistry
a. Decomposing readily.
b. Highly or violently reactive.
2. Physics
a. Decaying with relatively short lifetime. Used of subatomic particles.
b. Radioactive.

un·sta′ble·ness n.
un·sta′bly adv.

unstable

[unstā′bəl]
1 in an excited or active state, such as an atom with a nucleus possessing excess energy.
2 easily broken down or prone to decomposition.

unstable

adjective Referring to the structural or physical lability or instability of a chemical or other substance during production, transportation, or storage. See Unstable reactive substance.

unstable,

adj 1. not firm or fixed in one place; likely to move.
2. capable of undergoing spontaneous change. A nuclide in an unstable state is called
radioactive. An atom in an unstable state is called
excited.
unstable angina
n a form of pain that is prodromal to acute myocardial infarction. It typically has a sudden onset, sudden worsening, and stuttering recurrence over days and weeks. It carries a more severe short-term prognosis than stable chronic angina. Nearly one third of unstable angina patients experience myocardial infarction within 3 months of the first episode.

unstable

having a tendency to disrupt, e.g. unstable chemicals.

unstable fracture
the principal fragments in a reduced fracture are overriding. Slow union or nonunion results.
References in periodicals archive ?
The above table depicts that mean serum ferritin levels in Acute Myocardial Infarction, Unstable Angina and Controls were 81.
While there is a large number of studies that have reported on the measurement of energy cost of resistance exercises with stable platforms (20-22,24,25), there remains a lack of knowledge on the assessment of the energy cost during resistance exercises with an unstable platform.
The unstable weather conditions will continue to affect the country with fluctuation; keeping the weather cloudy to partly cloudy from one time to another, and the chance of rain will remain over the country on different time intervals.
The building was fairly unstable, and it's actually labelled as such, so we had to take precautions for the crews.
I use various unstable surfaces to bring awareness to inefficient or compensatory patterns," says Imrisek, who works with several L.
Results: At arrival, 109 neonates were categorized as stable and 117 as unstable.
Cardiologists first coined unstable angina in 1971 and, in the years following, applied it to hundreds of thousands of patients annually, patients with chest pain caused by acute, ischemic cardiac episodes that failed to produce the electrocardiogram change--an ST-segment elevation--that is the hallmark of a full-blown myocardial infarction.
The assumptions on which such mathematics might rest require close scrutiny, since there would not appear to be anything unstable about the low-speed operation of a standard fork-lift truck.
This paper provides a theory and evidence that the risk premium puzzle may be viewed mainly as a phenomenon pertaining to the unstable foreign exchange market.
The general problem for unstable systems was solved in Prokop et al.
A MOSQUE employee convicted of attempting to rape a 13-year-old Bahraini boy was spared jail yesterday, after judges ruled he was mentally unstable.
The idea of unstable exercising is widely used, for example, in bodybuilding [7] (usage of free weights).